Ayden is on the right track. If the crack is NOT in the bell (cup) but out on the profile area of your cymbal and if you catch the crack early on, drilling a 1/8" hole at each end of the crack will stop it in it's track. One edge of each hole must connect with the end of the crack and 'tother with the undamaged part of your cymbal. Those cracks most always run in a linear path along the tone grooves. The hole will stop the crack. A small 1/8' hole will have minimal impact on the sound. Of course, the cymbal will never sound as it did before the crack but, ya still got a cymbal, dude!
RODRUM, May 2011